APA (7e ed.) Bronvermelding

Johnson, D. W. (2014). Reaching out: Interpersonal effectiveness and self-actualization (Eleventh edition.). Pearson Education, Inc.

Chicago (17e ed.) Bronvermelding

Johnson, David W. Reaching Out: Interpersonal Effectiveness and Self-actualization. Eleventh edition. Upper Saddle River, New Jersey: Pearson Education, Inc, 2014.

MLA (9e ed.) Bronvermelding

Johnson, David W. Reaching Out: Interpersonal Effectiveness and Self-actualization. Eleventh edition. Pearson Education, Inc, 2014.